Cotton sprinkling management
The period from the beginning of boll opening to the end of boll flocculation is called the boll opening period. The general cotton fields in southern Fujian enter the boll opening period from late August to early September. The focus of field management during this period is to protect the roots, preserve the leaves, promote early maturing, and prevent premature aging. The specific approach is. First, continue to do a good job pruning squash to strengthen the late pruning of cotton, can improve the ventilation and light conditions in the field, reduce nutrient consumption, is conducive to the addition of Qiu Tao, increase boll weight, promote early maturity, and reduce rotten peach. The main task of the pruning is to subtract the old leaves and empty fruit branches from the lower part of the cotton aphid and remove the tip of the fruit branch. In addition to pruning in cotton fields with lush foliage and high density, measures should be taken to push the plants and ridges when the soil is moist after the rain. The two adjacent rows of cotton will be pushed together to form an “eight†shape. Both sides of the cotton and the ground between the lines can be exposed to sufficient sunlight to provide air, light, and humidity, and to increase the temperature and humidity in order to promote boll opening and reduce the number of rotten bells. 2. Adhere to the cultivator loose soil As the saying goes, “The first decline is rooted in decline, and the decline is rooted in the roots.†Because soil compaction in the later period of the cotton field affects root respiration, nutrient absorption, and soil microbial metabolism, it should be cultivating loose soil to achieve root protection. The purpose of preventing premature aging, but the cultivator should not be too deep, so as not to hurt the roots, generally 3-5 cm can be cultivated. Third, spraying foliar fertilizer to prevent premature aging due to lower temperature later, poor root absorption capacity, should be sprayed foliar fertilizer, to protect the purpose of increasing leaf production, spray 60 times per mu usually urea solution or 500 times Liquid potassium dihydrogen phosphate solution 70 kg, sprayed once every 7-10 days, continuous spray 3-4 times. Fourth, to achieve "drought can be poured, can be discharged" cotton boll opening period although the need for water is not much, but the appropriate water is still to improve the yield and quality assurance, so early to be poured, can be ranked. When watering, small ditch irrigation should be conducted to avoid flooding and flooding. Fifth, to strengthen the pest control The main pests in the late cotton fields are: blind borers, aphids, cotton bollworms. Blind stinkbugs can be used alternately with phoxim, malathion, and fipronil; cotton aphids can be controlled by high-level imidacloprid and acetamiprid spray; and high pyrethroid sprays of hederthroids and methamphetamines can be controlled. Anti-contact time is generally controlled before 9 am and after 5 pm. Sixth, chemical ripening on the late-maturing autumn peach more, can not timely boll the cotton field, can be cooked with ethephon, the general temperature of 3-5 after spraying is maintained above 20 °C or 15-20 days before the frost spray sunny day ( That is all year round from late September to early October). General mu with 40% ethephon agent 300-800 times liquid 60 kilograms, spraying focused on the cotton plant on the bell. Seven, timely harvesting of cotton from cracking to harvesting is appropriate for 5-7 days. Premature color and poor quality, low fiber strength is too late. When picking, we should pay attention to the separate rot-ring cotton, worm-eaten cotton and buckthorn cotton. Disposable Face Mask,Disposable Medical Masks,Surgical Disposable Face Mask,Disposable Medical Surgical Mask Guangzhou Aikangli Medical Technology Co., Ltd. , https://www.aikanli.com